Sanhedrin Tombs in WikipediaThe elaborate Sanhedria Tombs lie to the north of the city.[9]
They were so called by later generations because the largest
of them contains 70 chambers with burial benches, and the
Sanhedrin had seventy member.[9] Each of the three tombs would
actually have contained the burials of a single, multi-
generational, wealthy family. They were constructed between
the reign of Herod and the year 70.[9]http://en.wikipedia.org/wiki/Tomb_of_the_Sanhedrin#Second_Temple_era_tombs